Effect of Composition of B4C-Aluminum Composites on Mechanical Properties and Resistance Corrosion

2014 ◽  
pp. 23-33 ◽  
Author(s):  
Lucio Vázquez ◽  
Edgardo Hernández ◽  
Alejandro Altamirano ◽  
Víctor Cortés ◽  
Elizabeth Garfias ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aluminum Composites

scholarly journals Interfacial Strengthening of Graphene/Aluminum Composites through Point Defects: A First-Principles Study

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 738
Author(s):  
Xin Zhang ◽  
Shaoqing Wang
Keyword(s):  
Mechanical Properties ◽  
Metal Matrix Composites ◽  
Point Defects ◽  
Metal Matrix ◽  
Interfacial Bonding ◽  
Theoretical Research ◽  
Matrix Composites ◽  
Aluminum Composites ◽  
Single Vacancy ◽  
Design Guideline

The relationship between point defects and mechanical properties has not been fully understood yet from a theoretical perspective. This study systematically investigated how the Stone–Wales (SW) defect, the single vacancy (SV), and the double vacancy (DV) affect the mechanical properties of graphene/aluminum composites. The interfacial bonding energies containing the SW and DV defects were about twice that of the pristine graphene. Surprisingly, the interfacial bonding energy of the composites with single vacancy was almost four times that of without defect in graphene. These results indicate that point defects enhance the interfacial bonding strength significantly and thus improve the mechanical properties of graphene/aluminum composites, especially the SV defect. The differential charge density elucidates that the formation of strong Al–C covalent bonds at the defects is the most fundamental reason for improving the mechanical properties of graphene/aluminum composites. The theoretical research results show the defective graphene as the reinforcing phase is more promising to be used in the metal matrix composites, which will provide a novel design guideline for graphene reinforced metal matrix composites. Furthermore, the sp3-hybridized C dangling bonds increase the chemical activity of the SV graphene, making it possible for the SV graphene/aluminum composites to be used in the catalysis field.

Effect of Composition of B4C-Aluminum Composites on Mechanical Properties and Resistance Corrosion

2014 ◽  
pp. 23-33
Author(s):  
Lucio Vázquez ◽  
Edgardo Hernández ◽  
Alejandro Altamirano ◽  
Víctor Cortés ◽  
Elizabeth Garfias ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Aluminum Composites

scholarly journals Effect of Fabrication Parameters on the Performance of 0.5 wt.% Graphene Nanoplates-Reinforced Aluminum Composites

Materials ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 3483
Author(s):  
Shu Mei Lou ◽  
Chuan Dong Qu ◽  
Guang Xin Guo ◽  
Ling Wei Ran ◽  
Yong Qiang Liu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Ball Milling ◽  
Milling Time ◽  
Pure Aluminum ◽  
Fracture Morphology ◽  
Aluminum Composites ◽  
Ultrasonic Time ◽  
Fabrication Parameters ◽  
Ball Milling Time ◽  
Graphene Nanoplates

Aluminum composites reinforced by graphene nanoplates(GNP) with a mass fraction of 0.5% (0.5 wt.% GNP/Al) were fabricated using cold pressing and hot pressing. An orthogonal test was used to optimize the fabrication parameters. Ball milling time, ball milling speed, and ultrasonic time have the largest influence on the uniformity of the graphene in the composites. Afterwards, the microstructure, interfacial properties, and fracture morphology of the composites obtained with different parameters were further analyzed. The results show that ball milling time and ball milling speed have obvious influences on the mechanical properties of the composite. In this paper, when the ball milling speed is 300 r/min and the ball milling time is 6 h, the dispersion uniformity of graphene in the 0.5 wt.% GNP/Al composite is the best, the agglomeration is the lowest, and the mechanical properties of the composites are the best, among which the tensile strength is 156.8 MPa, 56.6% higher than that of pure aluminum fabricated by the same process (100.1 MPa), and the elongation is 19.9%, 39.8% lower than that of pure aluminum (33.1%).

scholarly journals Effects of heat treatment on the structure and the mechanical properties of the Shirasu Balloon-aluminum composites

1973 ◽  
Vol 23 (7) ◽  
pp. 310-316
Author(s):  
Akira KITAHARA ◽  
Koji IMAGAWA ◽  
Sumio NAGATA ◽  
Shigeru AKIYAMA ◽  
Hidetoshi UENO ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Aluminum Composites

scholarly journals Preparation of three dimensionally isotropic SiC-aluminum composites and their mechanical properties.

1992 ◽  
Vol 42 (5) ◽  
pp. 293-298
Author(s):  
Yuji YAMAMOTO ◽  
Hajmue IZAWA ◽  
Shojiro OCHIAI ◽  
Kozo OSAMURA
Keyword(s):  
Mechanical Properties ◽  
Aluminum Composites
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